JSkat is an implementation of the German card game Skat in Java. You can play according the rules of the German Skat Association and with some add on rules that are played in the pubs (e.g. Ramsch). All data are stored in XML.

KardsGT is a card game suite for those who love playing card games and are tired of switching to other OSes to get their fix or playing the Internet version. All of the computer-based players have their own sense of style of play, offering a great challenge. You can even customize your own deck of cards and even the image of yourself in game. Currently you can play Crazy Eights, Cribbage, Euchre, Hearts, Old Maid, Spades, and War.

Forge has more than 3,000 cards and allows to you play the trading card game Magic: The Gathering against the computer with rules enforcement. Other formats include drafting, sealed deck, and the "quest mode" where you start with a basic deck and you win more cards. The AI and user interface are basic but usable.

GPC-Slots 2 is a text-based casino game. Its
features include five slot machines, a progressive
jackpot added to by all machines, two roulette
games, two dice games, and the ability to print
status out to HTML.

OpenPref is an implementation of Preferans, a European trick-taking game against two virtual players. Currently it allows you to play the Sochi version of Preferans, allowing you to change some game conventions. Two alternative AIs are available.